<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb>
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 图表区域展示盒子 -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>
<script>
// 第一步导入 echarts
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
  data () {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created () {},
  async mounted () {
    // 第二步 初始化 echarts
    var myChart = echarts.init(document.getElementById('main'))
    // 第三步 指定配置项和数据
    const { data: res } = await this.$http.get('reports/type/1')
    // 合并数据和需要被合并的接口选项
    const result = _.merge(this.options, res.data)
    // 第四步 使用指定的配置项和数据展示图表
    myChart.setOption(result)
  },
  methods: {

  }
}
</script>
<style lang="less" scoped>

</style>
